Pressure-regulator for fermenting liquids.



APPLICATICN FILED APR. 10. 1914.

Patented July 20; 1915.

hard/02. M flu COLUMBIA PLANOGRAPH co., WASHINGTON. 0, c.

OTTO KEITEL, OF .WANDSBEK, GERMANY.

PRESSURE-REGULATOR FOR FERMENTING LIQUIDS.

Specification of Letters Patent.

Patented July 2%, lglli.

Application filed April 10, 1914. Serial No. 831,066.

To all whom it may concern H Be it known that I, OrTo KEITEL, a sub ject of the King ofPrussia, and resident of N o. 40 Hamburgerstrasse, VVandsbek, in the Empire of Germany, have invented a new Pressure-Regulator for Fermenting Liquids,

of which the following is a specification.

The present invention relates to an improved pressure regulator to be used in connection with the bung of casks and other vessels containing fermenting liquids.

Special objects of the invention are tosimplify and cheapen the construction and to render more efficient, serviceable and durable in operation devices of the kind referred to.

lVith these ends in view the invention consists in the novel combination, arrangement and adaptation of parts, all as more fully hereinafter explained, shown in the accompanying drawings and then specifically set out in the appended claim.

In the accompanying drawings Figure 1 shows the complete pressure regulator in front elevation. Fig. 2 is a sectional view of the improved valve arrangement on an enlarged scale.

The complete pressure regulator is mounted on a supporting plate a, which is adapted to be hung up at a suitable place. It comprises a tube cl closed at one end and fitted at the other end Z) for connection with a flexible pipe leading from the bung of a cask or other vessel containing fermenting liquids, a pressure gage e and the valve mechanism, which are both in detachable connection with the tube (Z by means of the internally screwthreaded tubular sockets or branches cof the latter.

The valve mechanism is inclosed in a casing 7 of flat cylindrical shape provided with an externally screwthreaded tubular socket g, whichis adapted to effect a tight connection with the rearmost branch 0 of the tube 03. This casing f is hermetically closed at the front by a diaphragm 'i made of elastic material, preferably india rubber. The dia phragm i is secured in place on an internal circumferential flange of the casing f by means of a tightly fitting lid h screwed into the marginal portion of the casing f, as

shown in Fig. 2.

the casing f with a soft metalpacking ring Z. The bottom of the casing 7' supports a conical valve stemm adapted to effect a hermetic closure when in contact with the soft metal packing ring Z of the valve .70. The external portion of the tubular valve 0 is closed by a cap K havingapertures a 1n its circumferential wall. Like apertures j) are provided in the lid 70.

A. spiral spring 9 acts centrally on the cap 70 of the tubular valve 70. This spring 9 surrounds a cylinder u closed on top by a conical head M The head a is of wider diameter than the cylinder u, so that a shoulder a is formed against which the spiral spring 9 abuts with its upper extremity. The lower extremity of the spiral spring q abuts against the flange 42 of a plunger 41 engaging and movable up and down in the aforesaid cylinder a. To prevent this sliding action of the plunger n being disturbed by air inclosed in the cylinder u, the plunger may be of polygonal cross section or it may be provided with longitudinal grooves leaving air passages open or other means suitable for this purpose may be resorted to. The plunger 41 is centrally bored at the bottom end for the reception of a projection 70 arranged centrally on top of the cap 70 This projection 76 terminates in a conical point k which presses against the ceiling o of the central bore 42 of the plunger Q1 A small hole in the center of the ceiling '0 accommodates the conical point 70 and secures the latter against dislocation. The tension of the spiral spring 9 may be adjusted by means of a hollow screw stem 2? fitting into an internally screwthreaded central bushing 72. of the lid 7L. Into this hollow screw stem t the cylinder u enters and abuts therein by means of its conical head 14 as shown in Fig. 2. The screw stem [6 has a milled head 1. The grooves provided in forming the milling of the head serve for fixing the screw stem t in its various positions, thus guarding same against accidental turning. A spring arm 8 fixed on the lid it engages these grooves of the milled head by means of a pointed index. By adjusting the screw stem 25 and fixing same through the agency of the spring arm .9 the pressure necessary to open the valve is can be regulated very exactly in accordance with a graduated scale suitably provided. When this pressure is exceeded the diaphragm z lifts the valve 7: off the stem m allowing the surplus gas to escape through the apertures 11, and p. 7

What I do claim as my invention, and desire to secure by Letters Patent, is:

An improved pressure regulator to be used in connection with the bung of casks and other vessels containing fermenting liquids, comprising, in combination, a cylindrical casing in communication with the fermenting liquid, a diaphragm closing the cylindrical casing, a tubular valve fitted in a central hole of the diaphragm, a soft metal packing ring lining in the tubular valve, a

Copies of this patent may be obtained for fiXed conical valve stem inside the casing adapted to effect a hermetic closure when in contact with the soft metal packing ring of my name this 30th day of March 1914;, in the r presence of two subscribing Witnesses.

OTTO, KEITEL. Witnesses:

ERNEST T. H. MUMNERLSOFF, IDLE OHRIsr. HAFERMANN.

five cents each, by addressing the Commissioner of Patents, 1 Washington, D. G. 

